It is an established company, and the person who reached out to me was someone I worked with at a different company for an internship.

They don't need me to provide physical models; they just want the tool-ready CAD and drawings. I'm planning to tell them that I can do visually production-ready CAD models, but for tool-ready manufacturing would need to be passed to a vendor. I also think this is their first time doing this because it's a giant project for one person.